@Finyum Think of it this way: Single player roguelikes are the norm (FTL, Rogue Legacy, Binding of Issac, etc). This is a beautiful Beat'em'up Dungeoncrawler with the added ability to play with your nearby family and friends, to share an experience if you want to. Think of it that way, because that's exactly what it is.

This is for PC, not console. People don't generally have their PC area set up in such a way that it is practical or convenient to have others gathered around it for a game. Not having online co-op automatically cuts out a large part of your audience that otherwise would have been interested in the game. That said, it's still in beta, so if they want this game to be successful then they had better add online co-op or people are just going to ignore it in favor of other games (such as Hammerwatch for example). No online co-op would be a big mistake imo.